All potential developments with trees on or near the site, require a tree survey and environmental assessment. General Demolition work on numerous projects every year which contain protected trees and green spaces. When a Tree Protection Order (TPO) is in place, a tree cannot be removed or damaged, including the impaction of soil surrounding the roots.
Most trees can be secured by erecting a fenced exclusion zone to prevent vehicles being driven too close and accidentally damaging roots or branches. However, there are occasions were site access is required adjacent to trees with Tree Protection Orders.
Most notable was a recent project in Crystal Palace, where the only site access was under a row of lime trees. In this instance heavy machinery was required to be driven past the trees; damage was prevented by covering the root shadow in a thick padding layer covered with track.